The third section of this work features long glissandos in the harps and piano through an allegro vivace, which transitions into a chromatic progression in the high strings, flute, and clarinet marked piu vivace and telling the conductor to gesture three beats in each measure. That same section then slows down into a D major largamente in which the organ sustains a fortissimo chord accompanied by arpeggios in the woodwinds. After that section of this work is another where the music of the titular god is represented by the French Horn emulating the sound of conch shells. That section foreshadows the arrival of Neptune to Trevi, after which the sun sets at the Villa Medici. For ten points, name this Ottorino Resphigi 
The third section of this work features long glissandos in the harps and piano through an allegro vivace, which transitions into a chromatic progression in the high strings, flute, and clarinet marked piu vivace and telling the conductor to gesture three beats in each measure. That same section then slows down into a D major largamente in which the organ sustains a fortissimo chord accompanied by arpeggios in the woodwinds. After that section of this work is another where the music of the titular god is represented by the French Horn emulating the sound of conch shells. That section foreshadows the arrival of Neptune to Trevi, after which the sun sets at the Villa Medici. For ten points, name this Ottorino Resphigi work about visits to some water-spouting artwork, which along with "Roman Festivals" and "Pines of Rome" make up his Roman Trilogy.
The third section of this work features long glissandos in the harps and piano through an allegro vivace, which transitions into a chromatic progression in the high strings, flute, and clarinet marked piu vivace and telling the conductor to gesture three beats in each measure.
{Fountains} of Rome or {Fontane di Roma}